US2437092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-stretching press
Assignee: HPM Development Corp
•
Filing: 1944-09-22
•
Granted: 1948-03-02
•
Expires: 1964-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur M Greene
- 👤 Ernst Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:24
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1461471A
Cited
US1622590A
Cited
US1710261A
Cited
US2006468A
Cited
US2129774A
Cited
US2245723A
Cited
US2279964A
Cited
US2279965A
Cited
US2289584A
Cited
US2302953A
Cited
US2342437A
Cited
US2301960A
Cited
US2346213A
Cited
US2371587A
Cited
US2349520A
Cited
US2326470A
Cited
US2378413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |